Reticulated tube, optical fiber protective unit, method for protecting optical fiber, and method for manufacturing reticulated tube

Abstract

A fixing structure includes: an optical fiber group constituted by a plurality of optical fibers; a tubular member through which the optical fiber group is passed; a reticulated tube, one end part of the reticulated tube being disposed on an outer periphery of the tubular member, the optical fiber group being inserted through an extended section of the reticulated tube extending out from the tubular member; and a fixing member that fixes the tubular member which has the reticulated tube disposed on the outer periphery thereof.

What is claimed is: 
     
         1 . A fixing structure comprising:
 an optical fiber group constituted by a plurality of optical fibers;   a tubular member through which the optical fiber group is passed;   a reticulated tube, one end part of the reticulated tube being disposed on an outer periphery of the tubular member, the optical fiber group being inserted through an extended section of the reticulated tube extending out from the tubular member; and   a fixing member that fixes the tubular member which has the reticulated tube disposed on the outer periphery thereof.   
     
     
         2 . The fixing structure according to  claim 1 , wherein
 the optical fiber group is an optical fiber group from a single optical cable.   
     
     
         3 . The fixing structure according to  claim 1 , wherein
 a plurality of optical fiber groups branch from a single optical cable, and   one or more of the optical fiber groups branching from the single optical cable are inserted through a respective one of the tubular member and the reticulated tube.   
     
     
         4 . The fixing structure according to  claim 3 , wherein
 the fixing structure is disposed in a manner that the optical fiber groups branching from the optical cable extend downward from the fixing structure.   
     
     
         5 . The fixing structure according to  claim 3 , wherein
 the fixing member comprises:
 a first fixing part that fixes an end part of the optical cable; and 
 a second fixing part that fixes a plurality of the tubular members. 
   
     
     
         6 . The fixing structure according to  claim 5 , wherein
 the second fixing part fixes the tubular members by digging into the tubular members.   
     
     
         7 . The fixing structure according to  claim 5 , wherein
 the second fixing part has teeth that dig into the tubular members.   
     
     
         8 . The fixing structure according to  claim 7 , wherein
 the second fixing part has recessed parts into which the respective tubular members are inserted, and   the teeth are constituted by the recessed parts.   
     
     
         9 . The fixing structure according to  claim 5 , further comprising
 a housing part configured to house a lead part of the optical cable at which the plurality of optical fiber groups branch from the optical cable.   
     
     
         10 . The fixing structure according to  claim 9 , wherein
 the housing part is configured in a manner that the housing part can be filled with an adhesive.   
     
     
         11 . The fixing structure according to  claim 10 , wherein
 the housing part includes a stopper that prevents leakage of the adhesive.   
     
     
         12 . The fixing structure according to  claim 1 , wherein
 the optical fiber group comprises an optical fiber ribbon.   
     
     
         13 . The fixing structure according to  claim 1 , wherein
 the fixing structure is disposed on a rack.   
     
     
         14 . A method for fixing a group of optical comprising:
 inserting an optical fiber group, which is constituted by a plurality of optical fibers, through a tubular member and a reticulated tube which extends out from the tubular member with one end part of the reticulated tube being disposed on an outer periphery of the tubular member; and   fixing the tubular member which has the reticulated tube disposed on the outer periphery thereof.